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Apache Syncope Ext: SAML2 SP Client Console

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.syncope.client.console.panels;

import javax.ws.rs.client.ClientBuilder;
import org.apache.syncope.client.console.SyncopeConsoleSession;
import org.apache.syncope.client.console.commons.Constants;
import org.apache.syncope.client.console.commons.HttpResourceStream;
import org.apache.wicket.markup.html.link.Link;
import org.apache.wicket.markup.html.panel.Panel;
import org.apache.wicket.request.Url;
import org.apache.wicket.request.UrlUtils;
import org.apache.wicket.request.cycle.RequestCycle;
import org.apache.wicket.request.handler.resource.ResourceStreamRequestHandler;
import org.apache.wicket.request.resource.ContentDisposition;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class SAML2SPPanel extends Panel {

    private static final long serialVersionUID = 2806917712636062674L;

    protected static final Logger LOG = LoggerFactory.getLogger(SAML2SPPanel.class);

    public SAML2SPPanel(final String id) {
        super(id);

        add(new Link("downloadMetadata") {

            private static final long serialVersionUID = -4331619903296515985L;

            @Override
            public void onClick() {
                try {
                    HttpResourceStream stream = new HttpResourceStream(ClientBuilder.newClient().
                            target(RequestCycle.get().getUrlRenderer().renderFullUrl(Url.parse(
                                    UrlUtils.rewriteToContextRelative("saml2sp/metadata", RequestCycle.get())))).
                            request().get());

                    ResourceStreamRequestHandler rsrh = new ResourceStreamRequestHandler(stream);
                    rsrh.setFileName(stream.getFilename() == null
                            ? SyncopeConsoleSession.get().getDomain() + "-SAML-SP-Metadata.xml"
                            : stream.getFilename());
                    rsrh.setContentDisposition(ContentDisposition.ATTACHMENT);

                    getRequestCycle().scheduleRequestHandlerAfterCurrent(rsrh);
                } catch (Exception e) {
                    LOG.error("While exporting SAML 2.0 SP metadata", e);
                    SyncopeConsoleSession.get().error(getString(Constants.ERROR) + ": " + e.getMessage());
                }
            }
        });
    }

}